Ritsuko Akizuki, Vivid Bikini, Idolmaster

A woman in a green bikini standing in shallow water, with her hands raised above her head. The woman has fair skin and long blonde hair that falls down her back. She is wearing a yellow bikini top with a sweetheart neckline and a high-waisted bottom with a ruffled trim. Her legs are slender and toned, and she appears to be confident and comfortable in the swimsuit. In the background, there is a blurred view of the beach or pool area, with people milling about in the distance. The overall atmosphere of the image is one of relaxation and leisure, suggesting that it may have been taken during a summer vacation or at a resort.